21470449

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 7801871

約数列:

[1, 7, 11, 13, 77, 89, 91, 143, 241, 623, 979, 1001, 1157, 1687, 2651, 3133, 6853, 8099, 12727, 18557, 21449, 21931, 34463, 89089, 150143, 235939, 241241, 278837, 1651573, 1951859, 3067207, 21470449]

約数ペア:

[(1, 21470449), (7, 3067207), (11, 1951859), (13, 1651573), (77, 278837), (89, 241241), (91, 235939), (143, 150143), (241, 89089), (623, 34463), (979, 21931), (1001, 21449), (1157, 18557), (1687, 12727), (2651, 8099), (3133, 6853)]